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    <script>
        var tempreture = 80
        var tempreture1 = 5/(9.0)*(tempreture - 32)
        console.log('华氏度 ：' + tempreture + ' °F');
        console.log( '摄氏度 ：' + tempreture1.toFixed(3) + ' °C');
        
        

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